8mm Forum: A new toy

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Topic: A new toy

Eric Ray
Junior
Posts: 25
From: Winters, TX, USA
Registered: Mar 2012

posted May 18, 2012 01:19 PM

I just bought a Schneider Kreuznach anamorphic lens for 35mm projectors from Ebay. I want to attach it to my Bell & Howell 3580 projector.

This did not work.

This did, but my arm might get tired after awhile.

The B&H lens has a 48mm thread and the Schneider lens has a 67mm thread (measured with a ruler). I could not find one step ring adapter to go from 48mm to 67mm. I do not know if the threads of the Schneider lens are compatible with the step ring threads. Will two step ring adapters work or will I need to get a lens clamp. The back of the Schneider lens is 70mm wide. I will still need to support the lens with some sort of bracket.

Any input would be appreciated.

Eric

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Martin Jones
Phenomenal Film Handler

Posts: 1269
From: Thetford , Norfolk,England
Registered: May 2008

posted May 18, 2012 01:34 PM

Nthing wrong with using two rings, but take lenses with you when buying to make sure they do the job. But you WILL need to suport the weight at the front!!!
Martin

--------------------
Retired TV Service Engineer
Ongoing interest in Telecine....

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Hugh Thompson Scott
Film God

Posts: 3063
From: Gt. Clifton,Cumbria,England
Registered: Jan 2012

posted May 18, 2012 02:15 PM

Martin's right there Eric,I would suggest a bracket for the front
of your projector,or even a separate stand because an attachment to the lens itself will put a heavy strain on the lens mounting and
will result in pictures being out of focus or possibly damaged film.

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Eric Ray
Junior
Posts: 25
From: Winters, TX, USA
Registered: Mar 2012

posted May 18, 2012 11:10 PM

Thanks for the input.

Eric

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Claus Harding
Phenomenal Film Handler

Posts: 1149
From: Washington DC
Registered: Oct 2006

posted May 21, 2012 12:51 PM

Eric,

Here is one possibility for you; this is my set-up with my Isco 'scope lens:

It's an Atlas microphone table stand with a microphone shockmount with the rubber bands removed, and tilted into the upright position.
The stand is also available as a two-section model with adjustable height.

Since diameters vary on lenses and shockmounts, you would have to measure the diameter of your lens to find a shockmount that is close to the right size. If you find a combination that is close, then some tape or material around the barrel could give you the right snug fit.
With the number of cheap Chinese mics on the market, their shockmounts are quite affordable.

Just my way of doing it... [Smile]

Claus.

--------------------
"Why are there shots of deserts in a scene that's supposed to take place in Belgium during the winter?" (Review of 'Battle of the Bulge'.)

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Bill Phelps
Phenomenal Film Handler

Posts: 1482
From: USA
Registered: Jan 2009

posted May 21, 2012 04:45 PM

That is one smooth set up Claus....I'm gonna build myself one...giving you full credit for design of course!

Bill [Smile]

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Claus Harding
Phenomenal Film Handler

Posts: 1149
From: Washington DC
Registered: Oct 2006

posted May 21, 2012 05:00 PM

Why, thank you, Bill...my name engraved on the base will do just fine.... [Big Grin]

PS: just as an addition, this shockmount is for a Marshall (Chinese condenser) mic and as long as you respect the balance point and gravity of these heavy lenses, the lock on the mount has relatively little strain on it. Just don't try to hang it from one end or such, or I strongly suspect it will start drooping.

--------------------
"Why are there shots of deserts in a scene that's supposed to take place in Belgium during the winter?" (Review of 'Battle of the Bulge'.)

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